The DLA Troop Support is issuing a total small business set-aside solicitation for a Heat Interchanger, Refrigerant, with RIX Industries as the sole OEM; alternate offers must include a complete technical data package. The contract will be a Firm-Fixed-Price, Indefinite Delivery/Indefinite Quantity (IDIQ) with a three-year performance period (two-year base plus one-year option). The guaranteed minimum is a one-time obligation of $163,000.00 during the base period, with a maximum contract value of $4,500,000.00. Delivery is FOB origin with inspection at destination, and the required delivery schedule is 365 days after each order. The solicitation is anticipated for release on June 17, 2026, and will be available via DIBBS.